JP7358230B2 - Field water management system, wide field water supply management system, and irrigation water management system - Google Patents

Description

The present invention relates to a field water management system, a wide field field water supply management system, and an irrigation water management system.

In recent years, field water management systems that can automatically supply water by remotely controlling water supply devices provided in each field are being put into practical use. For example, Patent Document 1 proposes a field water management system that determines a daily target water level in a rice field according to the growth stage of rice and controls a water supply valve so that the water level in the rice field is within the vicinity of the target water level. .

In addition, an irrigation water management system has been proposed in which irrigation water taken from a headwork and guided to a pumping station is distributed to each field group, which is a collection of fields, via a water diversion work or the like. For example, Patent Document 2 describes a main pump station for supplying water from a water source to each field group, and a main pump station for receiving irrigation water supplied from the main pump station and supplying water to each terminal field in the field group. An irrigation water management system is proposed that can distribute a predetermined amount of irrigation water from a water source to each field group by remotely controlling sub-storage pump stations and direct distribution valves installed in each field group from a central management department. has been done.

Patent Document 3 discloses that when there is a shortage of irrigation water available in a field area, the purpose is to appropriately allocate water to each field and improve the quality and yield of crops in the field area as a whole. A field irrigation system has been proposed.

The field irrigation system is configured to irrigate each field by controlling the water supply equipment installed in each field in a field area consisting of multiple sections, and can be used for the above field area during a predetermined period of time. water distribution amount determining means for dividing the total irrigation water by a predetermined value and determining the amount of water to be distributed to each field when allocating it to each field; and each of the water supply devices based on the water distribution amount. The present invention is characterized in that a field irrigation water management device having a control means for operating the field irrigation water management device is installed.

Japanese Patent Application Publication No. 09-65776 Japanese Patent Application Publication No. 10-42726 Japanese Patent Application Publication No. 2001-275501

However, there are many fields where the supply canal that sends irrigation water to each field group through a diversion works is an open canal that is finally discharged into a river, and in such cases, it is difficult to simply distribute water to each field. Even if the amount was determined, there was a problem that irrigation water was wasted. Therefore, it may be possible to adjust the diversion works and supply water to the water supply channel only when necessary.

However, for example, when it is necessary to flood a field, it is necessary to supply water to compensate for the drop in water level due to the effect of water depth reduction, or to avoid high temperature damage in the summer or to avoid low temperature damage at night due to cold damage. In some cases, it may be necessary to pour irrigation water over the area, and in such cases, if the water supply is cut off across the board by diversion works, there is a risk of irreversible damage to crops.

In view of the above-mentioned problems, an object of the present invention is to provide a field water management system, a wide-area field water supply management system, and an irrigation water management system that can be flexibly adapted to supply the required amount of irrigation water to the field at the required time. It is in the point of doing.

In order to achieve the above-mentioned object, the first characteristic configuration of the field water management system according to the present invention is that, for irrigation water supplied to a field group via a water supply channel, water is distributed to each field constituting the field group. A field water management system for managing water supply, the irrigation water management system comprising a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from a distribution reservoir to the field group via the water supply channel. , a water supply amount acquisition unit that acquires water supply information including the water supply amount to the field group; and a water supply amount acquisition unit that acquires water supply information including the water supply amount to the field group; a field water supply control unit that outputs a water supply command to a water supply device installed in the field; outputting a water supply command to each field when the amount of water supplied to the field is equal to or greater than the required amount of water that needs to be supplied to each field constituting the field group within a predetermined period; When the water supply amount to the field group included in the water supply information acquired from the irrigation water management system is less than the required water supply amount, to the field group where the field water supply request has been made to the irrigation water management system. The purpose of this system is to output water supply requests for irrigation water.

The field water supply control unit is configured to control the amount of irrigation water to be supplied to each field group within a predetermined period, which is acquired by the water supply amount acquisition unit, during flooding to maintain the water level of the field at a constant level. Water is supplied to the water supply equipment of each field included in the field group where a field water supply request occurs due to the field water level falling below the set water level when the required water supply amount that needs to be supplied to the field is exceeded. Because it outputs commands, it is possible to properly supply water to each field without waste.

In addition, if the water supply amount to a field group included in the water supply information acquired from the irrigation water management system by the water supply amount acquisition unit is less than the required water supply amount, and it is difficult to supply water to the fields that require water supply, the irrigation water By outputting the demand for insufficient irrigation water to the relevant field group to the management system, it is possible to avoid wasteful discharge of irrigation water into rivers via the supply canal, and reduce the supply amount as necessary. By making adjustments, irrigation water can be effectively supplied to each field.

The second characteristic configuration is that, in addition to the first characteristic configuration described above, the field water supply request is made when the field water level is lower than the set water level by a predetermined level at the time of flooding. This can occur either when a continuous flow of water is required to avoid damage or when a continuous flow of water is required due to low temperature damage during flooding.

Avoid wasteful discharge of irrigation water into rivers when the water level in the field decreases due to water depth reduction during flooding, or when continuous irrigation is required to avoid high-temperature damage in the summer or low-temperature damage caused by cold damage. It will be possible to supply irrigation water appropriately while avoiding

A first characteristic configuration of the wide-area field water supply management system according to the present invention includes a field water management system having the above-described first or second characteristic configuration, and adjusting the amount of irrigation water supplied from the distribution reservoir to the water supply canal. A wide-area field water supply management system comprising: a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from the distribution reservoir to the water supply canal; , an allowable maximum water supply amount acquisition unit that obtains an allowable maximum water supply amount that is the maximum water supply amount that can be supplied to each field group within a predetermined period of irrigation water obtained from the water distribution reservoir; and a permissible maximum water supply amount acquisition unit that does not exceed the allowable maximum water supply amount. a water supply schedule management unit that generates a water supply schedule for irrigation water to be supplied to each field group via each water supply channel so as to suppress wasteful discharge from the water supply channel to the river; a field water supply amount adjustment section that controls the field group water supply amount adjustment device based on the water supply schedule generated by the section, the water supply schedule management section comprising the water supply amount acquisition unit provided in the field water management system. The present invention is configured to output water supply information including the amount of irrigation water supplied to each field group.

The irrigation water management system is a system that manages the supply of irrigation water on the upstream side, and the field water management system is a non-stem system that manages the water supply to fields included in individual field groups on the downstream side.
The water supply schedule management unit in the irrigation water management system ensures that water is supplied to each field group via each water canal to prevent wasteful discharge from the water canals into rivers, within a range that does not exceed the maximum allowable water supply amount. A water supply schedule for irrigation water is generated, and the field group water supply amount adjustment device is controlled by the field water supply amount adjustment section based on the water supply schedule. The allowable maximum water supply amount is acquired by the allowable maximum water supply amount acquisition unit, and is the maximum water supply amount that can be supplied to each field group within a predetermined period of irrigation water obtained from the distribution reservoir.
By outputting water supply information including the amount of irrigation water supplied to each field group from the water supply schedule management unit to the water supply amount acquisition unit provided in the field water management system, the field group managed by the field water management system is The above-mentioned water supply control at the time of flooding is executed for the fields included in the field, and wasteful discharge from the water supply channel to the river is suppressed.

The second characteristic configuration is that, in addition to the first characteristic configuration described above, the water supply schedule management unit is configured to receive an irrigation water supply request from the field water supply control unit included in the field water management system. , the water supply schedule is adjusted to satisfy the water supply request.

When a water supply request for irrigation water is input from a field water supply control unit provided in the field water management system, a water supply schedule management unit adjusts the water supply schedule so as to satisfy the water supply request. As a result, irrigation water can be appropriately supplied to the fields of each field group when necessary, while avoiding wasteful discharge of irrigation water into the river via the water supply channel.

The first characteristic configuration of the irrigation water management system according to the present invention is that it includes a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from the distribution reservoir to the water supply channel, and a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from the distribution reservoir to the irrigation water supply channel for a predetermined period of time. a permissible maximum water supply amount acquisition unit that obtains the maximum allowable water supply amount that is the maximum water supply amount that can be supplied to each field group; and wasteful discharge from the water supply channel to the river within a range that does not exceed the allowable maximum water supply amount. a water supply schedule management section that generates a water supply schedule for irrigation water to be supplied to each field group via each water supply channel so as to suppress a field water supply amount adjustment section that controls a group water supply amount adjustment device; The present invention is configured to output water supply information including the amount of irrigation water supplied to each field group.

The water supply schedule management unit supplies irrigation water to each field group via each water supply channel within a range that does not exceed the maximum allowable water supply amount for each field group within a predetermined period acquired by the allowable maximum water supply amount acquisition unit. By managing the schedule and having the field water supply amount adjustment unit control the field group water supply amount adjustment device based on the water supply schedule, it is possible to suppress wasteful discharge of irrigation water into the river via the water supply channel. Become.

The second characteristic configuration is that, in addition to the first characteristic configuration described above, the water supply schedule management unit, when a water supply request for irrigation water is input from the field water supply control unit provided in the field water management system, , the water supply schedule is adjusted to satisfy the water supply request.

It becomes possible to appropriately supply irrigation water to a group of fields when necessary, while suppressing wasteful discharge of irrigation water into a river via a water supply channel.

As explained above, according to the present invention, there is provided a field water management system, a wide area field water supply management system, and an irrigation water management system that can flexibly respond so that the required amount of irrigation water can be supplied to the field at the required time. Now I can do it.

Illustration of irrigation water equipment Explanatory diagram of the field Diagram of field management system Flowchart showing the processing procedure of the water supply schedule management unit Flowchart showing the processing procedure of the field water supply control unit

Below, a field water management system, a wide field field water supply management system, and an irrigation water management system according to the present invention will be explained.
Note that the term "field" used in the following explanation refers to both rice paddies and fields, and a field group refers to multiple fields that are supplied with irrigation water from a common water supply system that is divided from a water source by a diversion works. . Normally, irrigation water taken from a common water source is supplied to different field groups through multiple water supply systems separated by water diversion works. In the following embodiments, a field for growing rice will be described, but the same applies to a field for cultivation.

As shown in FIG. 1, the irrigation water equipment is a water supply equipment for supplying irrigation water taken from a water source pond 130 such as a river or lake to each field 1 via a distribution reservoir 121. and each farm field 1 are connected by a main water supply pipe 120 and branch lines 100 and 101. The water supply channels 100 and 101 include cases where the ends are blocked and the water is not discharged into the river wastefully, and cases where the ends are open channels (irrigation channels) where the water is discharged into the river.

The water distribution reservoir 121 is a facility for storing pumped irrigation water to be supplied to each field group 10, and the irrigation water is pumped up by a pump of a pumping station 131 provided in the water source reservoir 130 to maintain a constant water level. A water supply pipe 120 is connected to a water distribution port of the water distribution reservoir 121, and pumped water for irrigation is pumped by water pressure.

The main water supply pipe 120 is branched from the distribution reservoir 121 to each field group 10, and a water diversion device 140 is provided which functions as a water diversion facility to adjust the amount of water supplied to each branched water supply channel 100. It is being That is, the irrigation water pumped from the water distribution reservoir 121 is supplied to each field group 10 after the amount of water supplied is adjusted by the water distribution device 140.

A water supply channel 100 serving as a branch line is also branched toward each farm field 1, and a water supply device 2 equipped with a water tap for supplying water to each farm field 1 is connected to the branched water channel 101. Further, each field 1 is provided with a drainage device 4 equipped with a drain plug, and a drainage channel 9 is provided so that water from each field 1 via the drainage device 4 is discharged into a river.

As shown in FIG. 2, in the field 1, there is a water supply device 2 that directs irrigation water flowing into the water supply channel 100 (101) to the field 1 via the headrace channel 3, and a water supply device 2 that directs the irrigation water flowing into the water supply channel 100 (101) to the field 1 via the headrace channel 3. A drainage device 4 is provided for discharging water into a drainage canal 9 via the field, and a wireless repeater 7 connectable to a communication network such as the Internet is installed near the field 1. Furthermore, a water level sensor 6 for measuring the water level in the field 1 is provided.

The water supply device 12 and the drainage device 16 include a power storage device equipped with a solar panel SP, an electric motor that drives a water tap or a drain tap, a control circuit that controls the electric motor, a communication circuit that performs wireless communication via a wireless repeater 7, and the like. A motor, a communication circuit, etc. are operated by the electric power of a condenser in which electric power generated by the solar panel SP is stored.

The communication circuit provided in the water supply device 2 and the drainage device 4 is configured to be able to communicate with the field water management server 21 via the wireless repeater 7, and is configured to be able to communicate with the field water management server 21 via the wireless repeater 7. The water level is transmitted to the field water management server 21, and the field water management server 21 is configured to be able to adjust the water supply valve and/or the drain valve by remote control.

Returning to FIG. 1, each water diversion device 140 provided in the water supply pipes 120, 100 connecting the water distribution reservoir 121 and each field group 10 includes a flow rate adjustment valve for water diversion, a control circuit for controlling the flow rate adjustment valve, and a communication circuit. A circuit is provided, and the irrigation water management server 31 is configured to be capable of network communication via the communication circuit, and the flow rate adjustment valve is configured to be adjustable by remote control by the irrigation water management server 31.

Irrigation water pumped from the distribution reservoir 121 is supplied to the individual fields 1 constituting each field group 10 after its flow rate is adjusted by the water diversion device 140 .

Taking rice cultivation as an example, a sufficient amount of water is supplied to the field and puddling is carried out, deep water management is continued for a while after rice planting to protect the rice, and once the rice has stabilized to a certain extent, shallow water management is followed by intermittent watering. It is necessary to adjust the water level in the field as the rice grows, such as restarting intermittent watering after drying to encourage root growth and suppress the growth of stems, and draining water at harvest time.

The water supply periods for each field overlap, such as the puddling season, and it is necessary to supply a large amount of water at the same time.In order to distribute a certain amount of irrigation water secured at the water source equally to each field, water is supplied on a field group basis. Planning and managing schedules.

However, if the hydrant continues to be opened even after the field water level reaches the specified water storage level, the amount of water supplied to other fields may be insufficient. Irrigation water is wastefully discharged from the water supply channels 100 and 101 into the river.

Therefore, after the field water level reaches the set water storage level, the irrigation water management server 31 adjusts the flow rate adjustment valve of each water diversion device 140 so that the irrigation water is not used in vain.

In such a situation, if water needs to be supplied to the field, an inconvenient situation will occur in which water cannot be properly supplied if the flow rate adjustment valves of each water diversion device 140 are throttled. For example, during flooding after the field water level has reached the set storage water level, when the storage water level drops below the set water level due to water reduction, or when continuous water is required to avoid high temperature problems during flooding. This is a case where continuous flow is required due to low temperature damage during flooding.

In order to flexibly deal with such problems, the field water management system according to the present invention connects the above-mentioned irrigation water management server 31 and field water management server 21 via communication media such as the Internet. This is a system that allows irrigation water to be supplied appropriately according to the situation of each individual field managed by the company. This is a field water management system that can be used to

Specifically, as shown in FIG. 3, the wide-area field water supply management system 200 includes a field water management system 20 and an irrigation water management system 30.

The field water management system 20 includes a field water management server 21 which is a field water management device, a terminal device 8 owned by a farmer, etc., and a water supply device 2, a drainage device 4, etc. provided in each field 1. ing. The field water management server 21 is provided with functional blocks of a water supply amount acquisition section 21A and a field water supply control section 21B. The terminal device 8 includes a portable terminal device such as a smartphone and a stationary terminal device such as a desktop computer.

The irrigation water management system 30 includes an irrigation water management server 31 and a water diversion device 140 that functions as a field group water supply amount adjustment device that adjusts the amount of water supplied from the water distribution reservoir 121 to each field group 10. The total amount of water supplied to each field group 10 via each water supply channel 100, 101 is adjusted by the field group water supply amount adjusting device. The irrigation water management server 31 is provided with the following functional blocks: a maximum allowable water supply amount acquisition section 31A, a field group water supply amount adjustment section 31B, and a water supply schedule management section 31C. In addition, below, the water diversion device 140 may be described as the field group water supply amount adjustment device 140.

Each server 21, 31 is equipped with a CPU board, a memory board, a communication board, a large-capacity external storage device, etc., and application programs stored in the memory provided on the memory board are executed by the CPU mounted on the CPU board. By doing so, each of the functional blocks described above is realized.

The allowable maximum water supply amount acquisition unit 31A provided in the irrigation water management server 31 is configured to obtain the allowable maximum water supply amount for each field group 10 within a predetermined period and output it to the water supply schedule management unit 31C.

The maximum allowable water supply amount refers to the maximum amount of irrigation water obtained from the distribution reservoir 121 that can be supplied to each field group 10 per day or per hour. The amount of water equally distributed by the device 140 is calculated and stored in the external storage device of the irrigation water management server 31.

The water supply schedule management unit 31C provided in the irrigation water management server 31 generates a water supply schedule for each field group within a range that does not exceed the allowable maximum water supply amount, passes it to the field group water supply amount adjustment unit 31B, and adjusts the water supply amount for each field group. The adjustment unit 31B controls the field group water supply amount adjustment device 140 to adjust the amount of water supplied to each field group.

The water supply schedule management unit 31C uniformly reduces the amount of water supplied, or A water supply schedule is generated so that water supply or water supply is stopped depending on the time zone, and water supply information including the time and water supply amount for each field group is transmitted to the water supply amount acquisition unit 21A of the field water management server 21 based on the water supply schedule.

Further, when there is a request for supplying irrigation water to any field group from the field water supply control unit 21B provided in the field water management server 21, the water supply schedule management unit 31C adjusts the water supply schedule in response to the water supply request. Then, water supply information including the adjusted time and water supply amount is transmitted to the water supply amount acquisition unit 21A.

The water supply amount acquisition unit 21A provided in the field water management server 21 outputs the water supply information transmitted from the water supply schedule management unit 31C to the field water supply control unit 21B, and the field water supply control unit 21B adjusts each field based on the water supply information. Understand the available water supply hours and water supply volume.

When a field water supply request, which is a water supply request from each field or a water supply request via the terminal device 8 of the field manager, occurs, the field water supply control unit 21B determines the water supply amount acquired by the water supply amount acquisition unit 21A as the required water supply amount. When the above conditions are met, a water supply command is output to each field. Then, when the water supply amount acquired by the water supply amount acquisition section 21A is less than the required water supply amount, the field water supply control section 21B issues a field water supply request to the irrigation water management system 30 without outputting a water supply command. Request the supply of irrigation water to the affected fields. The water supply request includes information specifying the field group that requires water supply and the required water supply amount.

Here, the required amount of water supply can be, for example, the amount of water that needs to be supplied to each field constituting the field group within a predetermined period. If the product of the water supply time and the amount of water included in the water supply information transmitted from the water supply schedule management unit 31C is equal to or greater than the amount of water that needs to be supplied within a predetermined period, it can be determined that water can be supplied to each field. If the required water supply amount is not met, it is necessary to request the irrigation water management system 30 to supply water because some fields may be difficult to supply water to.

Note that even when the water supply amount acquired by the water supply amount acquisition unit 21A is less than the required water supply amount, a water supply command is output to some fields, and in parallel, a water supply request is made to the irrigation water management system 30. may be sent. It becomes possible to supply water to some of the fields until the adjustment of the water supply schedule by the water supply schedule management unit 31C is completed.

As mentioned above, when there is a request to supply irrigation water to any field group, the water supply schedule is adjusted in response to the water supply request, and the water supply schedule is adjusted to ensure that the amount of irrigation water supplied to the relevant field group is sufficient. Adjust the amount accordingly. Specifically, the amount of water corresponding to the preset water supply request is adjusted within the range of the maximum allowable water supply amount acquired by the maximum allowable water supply amount acquisition unit 31A.

The water supply schedule management unit 31C generates a water supply schedule for each field group and adjusts the water supply schedule to each field group via the field group water supply amount adjustment unit 31B so as to satisfy the water supply request sent from the field water supply control unit 21B of each field group. Adjust the amount of water supplied to the flock. In principle, the water supply amount is adjusted within a range that does not exceed the allowable maximum water supply amount, but based on the water supply request sent from each field water supply control unit 21B, the water supply amount is adjusted within a range that does not exceed the allowable maximum water supply amount. You may.

When the total amount of irrigation water obtained from the water distribution reservoir 121 decreases, the water supply schedule management unit 31C performs multiple processes to set the water supply amount to exceed the allowable maximum water supply amount for some field groups. By performing this on each field group in turn, it becomes possible to supply the required amount of water to each field group for at least a certain period of time.

However, it is not easy to judge at what interval it is appropriate to switch the water supply amount. In such a case, the water supply schedule management unit 31C is preferably configured to use a machine learning device to generate a water supply schedule that exceeds the maximum allowable water supply amount. In this case, an algorithm using a neural network can be suitably used as a machine learning device.

For example, a neural network that inputs the water supply requirement of each field group, the maximum permissible water supply amount at that time, temperature, and the average water reduction depth of each field group, and outputs the optimal value of the water supply amount and water supply time for each field group. A network is constructed, and the minimum water supply amount and water supply time required for each field group are determined in advance based on the input combinations of water supply demand, allowable maximum water supply amount, temperature, and average water reduction depth for each field group. A tuned neural network can be constructed by performing a learning process using the optimal values as training data.

By taking into consideration the characteristics of each field group, which differs in size, temperature, and depth of water loss, it is possible to equalize the amount of water supplied so as not to cause irreparable damage to crops.

When the field water supply control unit 21B confirms that the water level in the field has decreased by a predetermined level from the set water level at the time of flooding, based on the water level information transmitted from the water supply device of the field, the field water supply control unit 21B performs a process to avoid high temperature problems during flooding. When a request is made via the terminal device 8 operated by the farmer that continuous running water is necessary due to flooding, a request is made via the terminal device 8 of the field manager that continuous running water is necessary due to low temperature damage during flooding. It is determined that there is a field water supply request when such request is made.

The generation procedure of the water supply possible schedule executed by the water supply schedule management section 31C described above is shown in FIG. 4, and the processing procedure of field water supply control executed by the field water supply control section 21B is shown in FIG.

When a water supply command is appropriately outputted to the water supply device 2 of the farm field 1 where the field water supply request has occurred in this manner, the water supply device 2 starts supplying water. In the case of a field water supply request due to a drop in the water level in the field, when the water level detected by the water level sensor 6 reaches the set water level, the water supply device 2 shuts off the water. In addition, if the field water supply request is for continuous water supply to avoid high-temperature damage, etc., when a water stop request is made to the field water supply control unit 21B via the terminal device 8 operated by the farmer, the corresponding A water stop command is output to the water supply device 2 in the field.

When all the field water supply requests are resolved in the field group controlled by the field water supply control unit 21B, that fact is transmitted to the water supply schedule management unit 31C, and the water supply schedule management unit 31C generates a water supply schedule for water saving again and It is output to the water supply amount adjustment section 31B.

In the embodiment described above, an example will be described in which water supply information is acquired from the irrigation water management system via the water supply amount acquisition unit 21A provided in the field management server 21, and the field water supply control unit 21B controls water supply to each field. However, a function for determining whether or not water supply can be controlled based on the required water supply amount executed by the water supply amount acquisition unit 21A and the field water supply control unit 21B is incorporated into the water supply schedule management unit 31C of the irrigation water management server 31, The field water supply control section 21B is equipped with only a function of outputting water supply commands to the water supply devices in each field, and the field water supply control section 21B controls each water supply device 2 based on the water supply commands from the water supply schedule management section 31C. It may be configured as follows. Alternatively, the water supply schedule management section 31C may include a function for outputting water supply commands to the water supply devices of each field, and the water supply schedule management section 31C may be configured to output water supply commands to the water supply devices 2 of each field. .

In this case, both the irrigation water management system 30 and the field water management system 20 will be integrated to constitute the field water management system of the present invention.

The embodiments described above are merely examples of the present invention, and the technical scope of the present invention is not intended to be limited by the description. It goes without saying that the specific configuration of the irrigation water management server can be modified and designed as appropriate within the scope of achieving the effects of the present invention.

1: Field 2: Water supply device 3: Headrace channel 6: Water level sensor 8: Terminal 10: Field group 20: Field water management system 21: Field water management server 21A: Water supply amount acquisition unit 21B: Field water supply control unit 30: Irrigation water Management system 31: Irrigation water management server 31A: Maximum allowable water supply amount acquisition section 31B: Field water supply amount adjustment section 31C: Water supply schedule management section 100: Water supply channel (branch line)
120: Water supply waterway (main line)
121: Water distribution reservoir 130: Water source pond 140: Field group water supply amount adjustment device 200: Wide area field water supply management system

Claims (7)

A field water management system that manages water supply to each field constituting the field group with respect to irrigation water supplied to the field group via a water supply channel,
Water supply information including the amount of water supplied to the field group for an irrigation water management system equipped with a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from the distribution reservoir to the field group via the water supply channel. a water supply amount acquisition unit that acquires the water supply amount;
a field water supply control unit that outputs a water supply command to a water supply device installed in each field for each field where a field water supply request is generated due to a water storage level in the field falling below a set water storage level during flooding;
Equipped with
The field water supply control unit supplies the water supply amount to the field group included in the water supply information acquired from the irrigation water management system by the water supply amount acquisition unit to each field forming the field group within a predetermined period. A water supply command is output to each field when the water supply amount is equal to or greater than the required water supply amount, and the water supply amount to the field group included in the water supply information acquired from the irrigation water management system by the water supply amount acquisition unit is A field water management system that outputs a water supply request for irrigation water to the field group where the field water supply request has occurred to the irrigation water management system when the amount of water supply is less than the required water supply amount. The field water supply request is made when the water level in the field is lower than the set water level at the time of flooding, when continuous water supply is required to avoid high temperature damage during flooding, or because of low temperature damage during flooding. 2. The field water management system according to claim 1, wherein the field water management system occurs in any of the cases where continuous water is required. A wide area field water supply management system comprising the field water management system according to claim 1 or 2, and an irrigation water management system that adjusts the amount of irrigation water supplied from the distribution reservoir to the water supply channel,
The irrigation water management system includes:
a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from the water distribution reservoir to the water supply channel;
an allowable maximum water supply amount obtaining unit that obtains an allowable maximum water supply amount that is the maximum water supply amount that can be supplied to each field group within a predetermined period of irrigation water obtained from the water distribution reservoir;
A water supply schedule that generates a water supply schedule for irrigation water to be supplied to each field group via each water supply channel so as to suppress wasteful discharge from the water supply channel to the river within a range that does not exceed the allowable maximum water supply amount. management department and
a field water supply amount adjustment unit that controls the field group water supply amount adjustment device based on the water supply schedule generated by the water supply schedule management unit;
including;
The water supply schedule management section is configured to output water supply information including the amount of irrigation water supplied to each field group to the water supply amount acquisition section provided in the field water management system. system. 4. The water supply schedule management unit adjusts the water supply schedule to satisfy the water supply request when a water supply request for irrigation water is input from the field water supply control unit included in the field water management system. Wide-area field water supply management system. a field group water supply amount adjustment device that adjusts the amount of irrigation water supplied from the distribution reservoir to the water supply canal;
an allowable maximum water supply amount obtaining unit that obtains an allowable maximum water supply amount that is the maximum water supply amount that can be supplied to each field group within a predetermined period of irrigation water obtained from the water distribution reservoir;
A water supply schedule that generates a water supply schedule for irrigation water to be supplied to each field group via each water supply channel so as to suppress wasteful discharge from the water supply channel to the river within a range that does not exceed the allowable maximum water supply amount. management department and
a field water supply amount adjustment unit that controls the field group water supply amount adjustment device based on the water supply schedule generated by the water supply schedule management unit;
including;
The water supply schedule management section is configured to output water supply information including the amount of irrigation water supplied to each field group to the water supply amount acquisition section provided in the field water management system according to claim 1 or 2. Irrigation water management system. 6. The water supply schedule management unit adjusts the water supply schedule to satisfy the water supply request when a water supply request for irrigation water is input from the field water supply control unit included in the field water management system. Irrigation water management system. When the water supply schedule management unit receives an irrigation water supply request from the field water supply control unit included in the field water management system, the water supply schedule management unit is configured to manage the water supply request even if the allowable maximum water supply amount is temporarily allowed to exceed the allowable maximum water supply amount. The irrigation water management system according to claim 5, wherein the water supply schedule is adjusted so as to satisfy the following.

Images